HZJQ-X1 Portable Transformer Insulation Oil BDV Tester

HZJQ-X1 Portable Automatic 80 kV Transformer Oil BDV Tester

The HZJQ-X1 Transformer Oil BDV Tester is a fully automatic, microprocessor-controlled instrument designed for measuring the dielectric breakdown voltage (BDV) of transformer oil and other liquid insulating media. Engineered in compliance with GB/T507-2002, DL429.9-91, and DL/T846.7-2004 standards, the HZJQ-X1 delivers laboratory-grade accuracy in a portable, field-ready form factor. Its single-chip microcontroller architecture ensures precise, repeatable voltage ramping at 50 Hz, while the large color LCD touchscreen with bilingual (Chinese/English) interface simplifies operation for engineers and technicians worldwide.

Product Value

Enhanced Asset Reliability: Regular BDV testing allows early detection of oil degradation, preventing catastrophic transformer failures and unplanned outages.

Labor Efficiency: Fully automated test sequences - boosting, stirring, standing, breakdown detection, and result calculation - reduce operator workload and eliminate human error.

Multi-Industry Compliance: Meets international and Chinese national standards, making it suitable for QA/QC labs, field maintenance crews, and third-party inspection services.

Data Traceability: Built-in thermal printer and USB export function ensure complete test documentation for audit trails and maintenance records.

Application Industries

Product Advantages

2.1 Fully Automated Intelligent Testing

Equipped with a high-performance microprocessor, the HZJQ-X1 executes the complete test cycle automatically: voltage boosting → oil stirring → standing → breakdown detection → calculation → printing. Operators simply load the sample and press start - the instrument handles the rest, supporting up to 10 consecutive breakdown tests per batch with automatic averaging.

2.2 High-Accuracy Measurement

Output voltage: 0–80 kV with < 3% voltage distortion rate

Measurement accuracy: ±3%

Uniform 50 Hz boost rate ensures stable, repeatable breakdown detection aligned with industry standards

2.3 Large Color LCD Touchscreen

The intuitive color touchscreen with bilingual (Chinese/English) menu prompts minimizes operator training requirements and reduces the risk of misoperation in the field.

2.4 Multi-Standard Compliance

Supports preloaded test profiles for:

GB/T507-2002 - China National Standard

DL429.9-91 / DL/T846.7-2004 - Electric Power Industry Standards

Custom mode with fully adjustable parameters (stop voltage, stir time, stand time, boost interval, test times, voltage boost rate)

2.5 Comprehensive Data Management

Power-down preservation: Stores up to 100 test results in non-volatile memory

Thermal printer: Instant hardcopy of breakdown values and average

USB export: Batch transfer test data to a USB flash drive for further analysis

RS232 interface (optional): PC communication for remote monitoring and data logging

2.6 Safety Protections

Built-in over-voltage, over-current, and limit protections safeguard both the operator and the instrument. A safety interlock on the oil cup high-voltage cover prevents live exposure during testing.

2.7 Portable & Field-Ready

Compact dimensions (460 × 280 × 320 mm) and lightweight design make it easy to transport between substations, workshops, and field sites.

2.8 Temperature & Clock Display

Integrated ambient temperature monitoring and real-time clock allow operators to record environmental conditions alongside test data for complete traceability.

Major Technical Indicators

FAQ

1. Q: What is a transformer oil BDV tester used for?
A: It measures the dielectric strength (breakdown voltage) of insulating oil used in transformers, circuit breakers, and other oil-filled equipment. Low BDV values indicate contamination by moisture, particles, or oxidation byproducts, signaling the need for oil filtration or replacement before insulation failure occurs.

2. Q: Which standards does the HZJQ-X1 comply with, and how many tests can it run automatically per batch?
A: Complies with GB/T507-2002, DL429.9-91, and DL/T846.7-2004 - with customizable mode for special applications. Supports 1 to 10 consecutive breakdown tests per batch, automatically calculating and printing each value plus the average.

3. Q: Can I export test data to a computer?
A: Yes - two export methods: USB port (export to flash drive) and RS232 interface (optional) for real-time PC communication.

4. Q: How do I clean the oil cup between tests?
A: Wipe electrodes with clean silk cloth; adjust electrode distance using feeler gauge; rinse with petroleum ether (no other solvents) 3 times (1 minute each); dry with blower for 2–3 minutes; rinse 1–3 times with the oil sample before actual testing.

5. Q: What safety protections does the instrument have?
A: Over-voltage protection, over-current protection, limit protection, and oil cup cover interlock (HV circuit engages only when cover is properly closed). Manufactured by Huazheng Electric Manufacturing (Baoding) Co., Ltd., China.

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